Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.

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但在1993年藤森宪法中,这一概念未被明确定义。在政党碎片化与政治极化背景下,自2016年以来,它逐渐演变为国会弹劾总统的常规工具。条文未改,含义却已改变,这成为秘鲁制度危机的重要法律根源之一。

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Their mission: to find out if men could survive two weeks in space. If not, the Moon was out of reach.